The victim, 30, collapsed shortly after taking what investigators suspect was heroin. First responders unsuccessfully attempted to revive him, and he was pronounced dead at Tristar Ashland City Medical Center.

Undercover investigators arranged another heroin deal with Stefko, and met him in Cheatham County for what the suspect believed was a transaction. That’s where he was arrested and taken to the Cheatham County Jail.

Stefko also faces drug charges in addition to second-degree murder.

Kelly Fisher, reporter for the Ashland City Times, can be reached at KPFisher@gannett.com, 615-801-3866 or on Twitter at @KellyPFisher.